Fuel Hoses Lines/piping And Fittings problems of the 2015 Mercedes Benz C300

There is a fuel hose (parts number: 274 070 3500) connect to the high pressure pump in front engine area. The fuel hose was fastened by a clamp (not sure the parts number) . Because of the design flaw, this clamp will loose since it's a snap joint assemblies not tighten by screws. Under this situation, the fuel hose will loose and affected by thermal expansion, this problem will cause fuel leak/seeping. We can smell fuel near the pump before we start car in cold in the morning and this smell can be smelled until the engine working into the normal operating temperature. Fuel is a very critical safety problem and usually we cannot take notice of this potential problem.